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UCHIRANA (Vantanea parviflora)
Trade Name
Uchirana
Scientific Name
Vantanea parviflora Lam.
Family
HUMIRIACEAE
Common Names
Uchirana (Brazil); Uxirana (Brazil)
Scientific Name Synonyms
Vantanea cupularis Huber
Description Of The Tree
Botanical Description
The trees are reported to develop straight to irregular boles, with commercial lengths of 9 m long and 50 cm in the average. Buttresses up to 2 m are also reported.
Natural Distribution
In Brazil this species is reported in the Para and Amazonas states.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Vessels per mm2 6 to 10 (medium). Occasionally multiple perforation plates. Multiple perforation plates. Vessel-ray pits coarse throug Occasionally apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Occasionally paratracheal axial parenchyma scanty and/or vasicentric. Prismatic crystals in non-chambered axial parenchyma cells. Prismatic crystals in chambered axial parenchyma Rays more than 10 per mm (abundant). Rays 1 to 2 seriate. Heterogeneous rays and/or multiseriate heterogeneous rays. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Fibers with distinctly bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
The wood has no specific odor or taste.
Color
The heartwood and sapwood are reported to be indistinct. The wood is light reddish brown color.
Grain
The grain is reported to be straight or interlocked.
Texture
The texture of the wood is medium.
Luster
It is reported to be moderate in luster.
Natural durability index (1= Very high durability, 7=Vey low durability)
2
Resistance To Impregnation
It is reported to be easy to preserve with oil or water soluble substances.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.86
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.99
Total shrinkage Tangential (Saturated to 0%MC) (%)
10.3
Total shrinkage Radial (Saturated to 0%MC) (%)
8.2
Drying Defects
Ease of Drying: This species dries rapidly. Drying Defects: Severe checking is reported.
Recommended Dry Kiln Schedule
BR-B
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.3
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1732
Stiffness (MOE) 12%MC (kgf/cm²)
179000
Compression parallel to fiber 12%MC (kgf/cm²)
881
Compression perpendicular to fiber 12%MC (kgf/cm²)
155
Shear strength radial 12%MC (kgf/cm²)
181
Janka hardness (side) 12%MC (kgf)
1337
Janka hardness (end grain) 12%MC (kgf)
1574
Workability
Planing
Planing is reported to be fair but it gives a good finishing. Risk of torn surfaces.
Turning
30
Boring
Boring is rated as fair, but it gives a good finishing.
Sanding
Sanding operations give a fair finishing because of fuzzy surfaces.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, FURNITURE AND CABINETS, TURNING, OTHER AND MUSICAL INSTRUMENTS, handicrafts
General Housing
- 10 - Silica in Timbers
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Turning
- 30 - Embassy of Honduras in Japan
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
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